Staging: comedi: dt2817: Coding style issue fixed.

This fixes up a WARNING: 'Block comments use a trailing */ on a
separate line' found by the checkpatch.pl tool.

Signed-off-by: Ravishankar Karkala Mallikarjunayya <ravishankarkm32@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>